The sum of the Reciprocals of the age of Neeta is 3 years ago and 5 years hence is ⅓. Find her present age? ( Quadratic Equations )
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Answered by
1
Answer:
ANSWER
Let the present age of Rehman =x
3 years ago Rehman’s age =(x–3) years
5 years later Rehman’s age =(x+5) years.
Now, according to the condition,
(x–3)
1
+
(x+5)
1
=
3
1
(x–3)(x+5)
(x+5+x–3)
=
3
1
(x
2
–3x+5x–15)
(2x+2)
=
3
1
x
2
+2x–15=6x+6
x
2
–4x–21=0
(x+3)(x–7)=0
Either,x+3=0 Or, x–7=0
Thus, x=7 or –3; but age cannot be negative.
Hence the present age of Rehman is 7 years.
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6
Answer:
hello Army here is ur ans
hence Meena's present age is 7 yrs..
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